Overwrite postprocess_pdf_report hook to add doc attachment capabilities

__manifest__.py

@@ -36,7 +36,11 @@
     """,
     "website": "http://odoo.consulting/",
     "depends": ["base", "document"],
-    "data": ["security/ir.model.access.csv", "views/document_attachment.xml"],
+    "data": [
+        "security/ir.model.access.csv",
+        "views/document_attachment.xml",
+        "views/ir_actions_report.xml",
+    ],
     "test": [],
     "installable": True,
 }

models/__init__.py

 # flake8: noqa
 
 from . import document_attachment
+from . import ir_actions_report

models/ir_actions_report.py

+##############################################################################
+#
+#    Accounting customizations for GLE JAL
+#    Copyright (C) 2019 XCG Consulting (www.xcg-consulting.fr)
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from odoo import api, fields, models
+
+
+class IrActReport(models.Model):
+    _inherit = "ir.actions.report"
+
+    docatt_use = fields.Boolean(string="Save as Document Attachment")
+
+    docatt_field_id = fields.Many2one(
+        comodel_name="ir.model.fields",
+        string="Field for document attachment",
+        domain="""
+            [
+                ('model', '=', model),
+                ('relation', '=', 'document_attachment')
+            ]
+        """,
+        help="Specify the field which will contain the document attachment.",
+    )
+
+    docatt_type_id = fields.Many2one(
+        comodel_name="document_attachment.type",
+        string="Document attachment type",
+        domain="[('model', '=', model)]",
+        help="Specify the document attachment type",
+    )
+
+    @api.multi
+    def postprocess_pdf_report(self, record, buffer):
+        """Catch invoice reports to save a typed link to the attached document.
+        """
+
+        attachment = super(IrActReport, self).postprocess_pdf_report(
+            record, buffer
+        )
+
+        if (
+            attachment
+            and self
+            and len(self) == 1
+            and self.docatt_type_id
+            and self.docatt_field_id
+            and self.report_name
+        ):
+            setattr(
+                record,
+                self.docatt_field_id.name,
+                (
+                    self.env["document_attachment"]
+                    .with_context(res_id=record.id, res_model=record._name)
+                    .create(
+                        {
+                            "file_id": attachment.id,
+                            "type_id": self.docatt_type_id.id,
+                        }
+                    )
+                ),
+            )
+
+        return attachment

views/ir_actions_report.xml

+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+
+    <record id="docatt_act_report_xml_view" model="ir.ui.view">
+        <field name="name">docatt_act_report_xml_view</field>
+        <field name="model">ir.actions.report</field>
+        <field name="inherit_id" ref="base.act_report_xml_view" />
+        <field name="arch" type="xml">
+            <page name="advanced" position="inside">
+                <group>
+                    <field name="docatt_use" />
+                    <field name="docatt_field_id"
+                       attrs="{
+                            'invisible': [('docatt_use', '=', False)],
+                            'required': [('docatt_use', '=', True)]
+                       }" options="{'no_create': True}" />
+                    <field name="docatt_type_id"
+                       attrs="{
+                            'invisible': [('docatt_use', '=', False)],
+                            'required': [('docatt_use', '=', True)]
+                       }"  options="{'no_create': True}" />
+                </group>
+            </page>
+        </field>
+    </record>
+</odoo>
\ No newline at end of file